Cable walking and obstacle-spanning hot-line work tool

The invention discloses a cable walking and obstacle-spanning hot-line work tool. The cable walking and obstacle-spanning hot-line work tool comprises a walking device and a mechanical arm fixed on the walking device, wherein a mechanical hand is arranged at one end of the mechanical arm; a working tool on a base plate is conveyed to a cable working place by the walking device; a large arm and a small arm rotate to align to a working direction, and then specific grasping, mounting, fixing, detachment and replacement work can be finished by a hand rack. The cable walking and obstacle-spanning hot-line work tool has a compact structure and a reasonable design, and strong functionality, and can smoothly span across the obstacles on a cable to finish related work.